The late Dr. Margaret Lowenfeld developed a number of tools or techniques for non-verbal communication with children. These were clinically to understand, assess and, to a degree, ‘treat’ disturbed children and later adults. Through her long association with Dr. Margaret Mead, several of these techniques have found a place in anthropological field work and other studies.
The techniques were:

1. Lowenfeld World Techniques Lowenfeld
2. Mosaic Test
3. Poleidoblocs
4. Kaleidoblocs

Dr. Lowenfeld’s Will set up a Trust, the Dr. Margaret Lowenfeld Trust, to further the aims and objects of the Institute of Child Psychology, to which she devoted her life. The Trustees decided that their first responsibility was to see that the use of the various ‘tools’ was adequately documented and described. This meant that priority had to be given to preparing manuals on the World Technique and Kaleidoblocs. Dr. Margaret Mead and Miss Ville Andersen, long-time associates of Dr. Lowenfeld, have prepared a text on ‘Worlds’, which is currently (summer 1976) beginning its production cycle.